Nanoscience and Nanotechnology Commons^™

A Generalized Solidification Model And Microstructural Verification For The Nd–Fe–B–Ti–C System Processed By Rapid Solidification, Matthew J. Kramer, C.P. Li, K.W. Dennis, R.W. Mccallum, C.H. Sellers, D.J. Branagan, Jeffrey E. Shield

Nebraska Center for Materials and Nanoscience: Faculty Publications

For the Nd₂Fe₁₄B (2-14-1) compound, the optimal grain size should be smaller than the size of the single domain size of 150 nm. Transition metal carbides (TMC) also reduce the quench rate necessary to achieve the optimal or overquenched condition. This allows inert gas atomization (IGA) to produce viable magnetic materials. In this article we will demonstrate that optimal microstructure for the 2-14-1 can be produced by IGA with the addition of TiC. Moreover, a solidification model will be presented to show (1) how recalescence is a critical feature to the evolution of the microstructure in …